//
//  AppServices.swift
//  suixinkan
//
//  Created by Codex on 2026/6/26.
//

import Foundation

@MainActor
/// 全局依赖容器，集中提供 ViewModel 与 ViewController 所需的 API 和上下文。
final class AppServices {
    static let shared = AppServices()

    let session: SessionBundle
    let context: AppContextBundle
    let network: NetworkBundle
    let ui: UIFeedbackBundle
    let runtime: AppRuntimeBundle
    let appNavigator: AppNavigator

    /// 生产环境默认初始化。
    private convenience init() {
        self.init(assembly: AppServicesAssembly())
    }

    /// 测试专用初始化，允许注入 mock `APIClient` 与存储替身。
    convenience init(
        apiClient: APIClient,
        tokenStore: SessionTokenStore = SessionTokenStore(),
        snapshotStore: AccountSnapshotStore = AccountSnapshotStore(),
        preferencesStore: AppPreferencesStore = AppPreferencesStore()
    ) {
        self.init(
            assembly: AppServicesAssembly(
                apiClient: apiClient,
                tokenStore: tokenStore,
                snapshotStore: snapshotStore,
                preferencesStore: preferencesStore
            )
        )
    }

    /// 使用装配器完成容器初始化并建立跨 bundle 绑定。
    private init(assembly: AppServicesAssembly) {
        let dependencies = assembly.makeDependencies()
        session = dependencies.session
        context = dependencies.context
        network = dependencies.network
        ui = dependencies.ui
        runtime = dependencies.runtime
        appNavigator = dependencies.appNavigator
        bindAuthTokenProvider()
    }

    /// 绑定推送与 UIKit 导航。
    func configurePushNotifications() {
        PushNotificationManager.shared.configure(
            api: pushAPI,
            session: appSession,
            navigator: appNavigator
        )
    }

    /// 将 `APIClient` 与当前 `AppSession` token 关联。
    private func bindAuthTokenProvider() {
        apiClient.bindAuthTokenProvider { [unowned self] in
            appSession.token
        }
    }
}